package org.jboss.windup.config;

import java.io.IOException;
import java.util.Collections;

import javax.inject.Inject;
import javax.inject.Singleton;

import org.jboss.arquillian.container.test.api.Deployment;
import org.jboss.arquillian.junit.Arquillian;
import org.jboss.forge.arquillian.AddonDependency;
import org.jboss.forge.arquillian.AddonDependencies;
import org.jboss.forge.arquillian.archive.AddonArchive;
import org.jboss.forge.furnace.util.Predicate;
import org.jboss.shrinkwrap.api.ShrinkWrap;
import org.jboss.windup.config.loader.RuleLoader;
import org.jboss.windup.config.loader.RuleLoaderContext;
import org.jboss.windup.config.metadata.MetadataBuilder;
import org.jboss.windup.config.phase.ArchiveExtractionPhase;
import org.jboss.windup.config.phase.MigrationRulesPhase;
import org.jboss.windup.graph.GraphContext;
import org.jboss.windup.graph.GraphContextFactory;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.ocpsoft.rewrite.config.Configuration;
import org.ocpsoft.rewrite.config.ConfigurationBuilder;
import org.ocpsoft.rewrite.config.Rule;
import org.ocpsoft.rewrite.context.EvaluationContext;
import org.ocpsoft.rewrite.event.Rewrite;

@RunWith(Arquillian.class)
public class RuleLoaderTest {

    @Deployment
    @AddonDependencies({
            @AddonDependency(name = "org.jboss.windup.config:windup-config"),
            @AddonDependency(name = "org.jboss.windup.graph:windup-graph"),
            @AddonDependency(name = "org.jboss.forge.furnace.container:cdi")
    })
    public static AddonArchive getDeployment() {
        final AddonArchive archive = ShrinkWrap.create(AddonArchive.class)
                .addBeansXML();
        return archive;
    }

    @Inject
    private GraphContextFactory factory;
    @Inject
    private RuleLoader loader;

    @Test
    public void testRuleProviderWithFilter() throws IOException {
        try (GraphContext context = factory.create(true)) {
            Predicate<RuleProvider> filter = (provider) -> provider.getMetadata().getPhase() == MigrationRulesPhase.class;

            RuleLoaderContext ruleLoaderContext = new RuleLoaderContext(Collections.emptyList(), filter);
            Configuration configuration1 = loader.loadConfiguration(ruleLoaderContext).getConfiguration();
            boolean found1 = false;
            boolean found2 = false;
            for (Rule rule : configuration1.getRules()) {
                if (rule.getId().equals(TestRuleProvider1Phase.class.getSimpleName())) {
                    found1 = true;
                } else if (rule.getId().equals(TestRuleProvider2Phase.class.getSimpleName())) {
                    found2 = true;
                }
            }
            Assert.assertTrue(found1);
            Assert.assertFalse(found2);
        }
    }

    @Singleton
    public static class TestRuleProvider1Phase extends AbstractRuleProvider {
        public TestRuleProvider1Phase() {
            super(MetadataBuilder.forProvider(TestRuleProvider1Phase.class, "TestRuleProvider1Phase"));
        }

        @Override
        public Configuration getConfiguration(RuleLoaderContext ruleLoaderContext) {
            return ConfigurationBuilder.begin()
                    .addRule(new Rule() {
                        @Override
                        public void perform(Rewrite event, EvaluationContext context) {
                        }

                        @Override
                        public boolean evaluate(Rewrite event, EvaluationContext context) {
                            return true;
                        }

                        @Override
                        public String getId() {
                            return TestRuleProvider1Phase.class.getSimpleName();
                        }
                    });
        }
    }

    @Singleton
    public static class TestRuleProvider2Phase extends AbstractRuleProvider {
        public TestRuleProvider2Phase() {
            super(MetadataBuilder.forProvider(TestRuleProvider2Phase.class, "TestRuleProvider2Phase")
                    .setPhase(ArchiveExtractionPhase.class));
        }

        @Override
        public Configuration getConfiguration(RuleLoaderContext ruleLoaderContext) {
            return ConfigurationBuilder.begin()
                    .addRule(new Rule() {
                        @Override
                        public void perform(Rewrite event, EvaluationContext context) {
                        }

                        @Override
                        public boolean evaluate(Rewrite event, EvaluationContext context) {
                            return true;
                        }

                        @Override
                        public String getId() {
                            return TestRuleProvider2Phase.class.getSimpleName();
                        }
                    });
        }
    }
}
